the bulb is not good in my opinion.
Buy a GVG or...
Buy a Bong and a vaporstar. <- that is what i use.
Make a sandwich: little bit peppermint at the bottom-dmt-peppermint at the top.
now u put water in the bong and use a torch lighter.
this combination is a very smooth combination. You can hold the smoke for a long time and you can smoke all the dmt with 1 hit.
This will give you a breaktrough every time

"Not all drugs are good. Some of them are great!"
-Bill Hicks